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Date: Thu, 16 May 2024 23:07:01 +0800
From: kernel test robot <oliver.sang@intel.com>
To: Jinjie Ruan <ruanjinjie@huawei.com>
CC: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-kernel@vger.kernel.org>,
	<tglx@linutronix.de>, <ruanjinjie@huawei.com>, <oliver.sang@intel.com>
Subject: Re: [PATCH] genirq: Refactor the irq_chip_xxx_parent()
Message-ID: <202405162230.b806f460-oliver.sang@intel.com>
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Hello,

kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:

commit: d3e17411835053b9cd90e3ec2a3cff4e9eea55fa ("[PATCH] genirq: Refactor the irq_chip_xxx_parent()")
url: https://github.com/intel-lab-lkp/linux/commits/Jinjie-Ruan/genirq-Refactor-the-irq_chip_xxx_parent/20240514-213011
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git 382d2ffe86efb1e2fa803d2cf17e5bfc34e574f3
patch link: https://lore.kernel.org/all/20240514131910.2614027-1-ruanjinjie@huawei.com/
patch subject: [PATCH] genirq: Refactor the irq_chip_xxx_parent()

in testcase: boot

compiler: gcc-13
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)


+-------------------------------------------------------+------------+------------+
|                                                       | 382d2ffe86 | d3e1741183 |
+-------------------------------------------------------+------------+------------+
| boot_successes                                        | 18         | 0          |
| boot_failures                                         | 0          | 18         |
| BUG:kernel_NULL_pointer_dereference,address           | 0          | 18         |
| Oops:#[##]                                            | 0          | 18         |
| RIP:apic_ack_edge                                     | 0          | 18         |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0          | 18         |
+-------------------------------------------------------+------------+------------+


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202405162230.b806f460-oliver.sang@intel.com


[    0.414620][    C0] BUG: kernel NULL pointer dereference, address: 0000000000000030
[    0.414623][    C0] #PF: supervisor read access in kernel mode
[    0.414625][    C0] #PF: error_code(0x0000) - not-present page
[    0.414627][    C0] PGD 0 P4D 0
[    0.414630][    C0] Oops: 0000 [#1] SMP PTI
[    0.414633][    C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-00052-gd3e174118350 #1
[    0.414637][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.414639][ C0] RIP: 0010:apic_ack_edge (arch/x86/kernel/apic/vector.c:1058 (discriminator 1) arch/x86/kernel/apic/vector.c:915 (discriminator 1)) 
[ 0.414646][ C0] Code: 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 53 48 89 fb 48 85 ff 74 4b 48 89 f8 48 89 c2 48 8b 40 28 48 85 c0 75 f4 48 8b 7a 30 <f6> 47 30 01 75 11 48 8b 43 10 8b 00 f6 c4 01 75 19 5b e9 04 12 01
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	f3 0f 1e fa          	endbr64 
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	53                   	push   %rbx
   f:	48 89 fb             	mov    %rdi,%rbx
  12:	48 85 ff             	test   %rdi,%rdi
  15:	74 4b                	je     0x62
  17:	48 89 f8             	mov    %rdi,%rax
  1a:	48 89 c2             	mov    %rax,%rdx
  1d:	48 8b 40 28          	mov    0x28(%rax),%rax
  21:	48 85 c0             	test   %rax,%rax
  24:	75 f4                	jne    0x1a
  26:	48 8b 7a 30          	mov    0x30(%rdx),%rdi
  2a:*	f6 47 30 01          	testb  $0x1,0x30(%rdi)		<-- trapping instruction
  2e:	75 11                	jne    0x41
  30:	48 8b 43 10          	mov    0x10(%rbx),%rax
  34:	8b 00                	mov    (%rax),%eax
  36:	f6 c4 01             	test   $0x1,%ah
  39:	75 19                	jne    0x54
  3b:	5b                   	pop    %rbx
  3c:	e9                   	.byte 0xe9
  3d:	04 12                	add    $0x12,%al
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	f6 47 30 01          	testb  $0x1,0x30(%rdi)
   4:	75 11                	jne    0x17
   6:	48 8b 43 10          	mov    0x10(%rbx),%rax
   a:	8b 00                	mov    (%rax),%eax
   c:	f6 c4 01             	test   $0x1,%ah
   f:	75 19                	jne    0x2a
  11:	5b                   	pop    %rbx
  12:	e9                   	.byte 0xe9
  13:	04 12                	add    $0x12,%al
  15:	01                   	.byte 0x1
[    0.414649][    C0] RSP: 0000:ffffa39080003fa8 EFLAGS: 00010046
[    0.414652][    C0] RAX: ffffffffb36738d0 RBX: 0000000000000000 RCX: 0000000046ebfda4
[    0.414655][    C0] RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000000
[    0.414657][    C0] RBP: ffff961d001644a4 R08: 0000000000000001 R09: 0000000000000000
[    0.414658][    C0] R10: 0000000000000000 R11: ffffa39080003ff8 R12: ffff961d00164428
[    0.414660][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[    0.414664][    C0] FS:  0000000000000000(0000) GS:ffff96202fc00000(0000) knlGS:0000000000000000
[    0.414667][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.414669][    C0] CR2: 0000000000000030 CR3: 00000001aba1c000 CR4: 00000000000000b0
[    0.414671][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.414672][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    0.414674][    C0] Call Trace:
[    0.414688][    C0]  <IRQ>
[ 0.414690][ C0] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) 
[ 0.414696][ C0] ? page_fault_oops (arch/x86/mm/fault.c:713) 
[ 0.414702][ C0] ? exc_page_fault (arch/x86/include/asm/irqflags.h:37 arch/x86/include/asm/irqflags.h:72 arch/x86/mm/fault.c:1513 arch/x86/mm/fault.c:1563) 
[ 0.414707][ C0] ? asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) 
[ 0.414712][ C0] ? __pfx_apic_ack_edge (arch/x86/kernel/apic/vector.c:914) 
[ 0.414715][ C0] ? apic_ack_edge (arch/x86/kernel/apic/vector.c:1058 (discriminator 1) arch/x86/kernel/apic/vector.c:915 (discriminator 1)) 
[ 0.414718][ C0] handle_edge_irq (kernel/irq/chip.c:812) 
[ 0.414724][ C0] __common_interrupt (include/asm-generic/irq_regs.h:29 (discriminator 5) arch/x86/kernel/irq.c:270 (discriminator 5)) 
[ 0.414730][ C0] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 35)) 
[    0.414735][    C0]  </IRQ>
[    0.414736][    C0]  <TASK>
[ 0.414737][ C0] asm_common_interrupt (arch/x86/include/asm/idtentry.h:693) 
[ 0.414740][ C0] RIP: 0010:console_flush_all (kernel/printk/printk.c:2979) 
[ 0.414744][ C0] Code: b5 88 54 24 07 e8 5c af 01 00 0f b6 54 24 07 41 88 14 24 e8 0e 1d 00 00 f7 c5 00 02 00 00 0f 84 da 00 00 00 fb 41 80 3c 24 00 <0f> 85 a3 00 00 00 49 8b 47 58 49 39 45 00 73 04 49 89 45 00 8b 05
All code
========
   0:	b5 88                	mov    $0x88,%ch
   2:	54                   	push   %rsp
   3:	24 07                	and    $0x7,%al
   5:	e8 5c af 01 00       	callq  0x1af66
   a:	0f b6 54 24 07       	movzbl 0x7(%rsp),%edx
   f:	41 88 14 24          	mov    %dl,(%r12)
  13:	e8 0e 1d 00 00       	callq  0x1d26
  18:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  1e:	0f 84 da 00 00 00    	je     0xfe
  24:	fb                   	sti    
  25:	41 80 3c 24 00       	cmpb   $0x0,(%r12)
  2a:*	0f 85 a3 00 00 00    	jne    0xd3		<-- trapping instruction
  30:	49 8b 47 58          	mov    0x58(%r15),%rax
  34:	49 39 45 00          	cmp    %rax,0x0(%r13)
  38:	73 04                	jae    0x3e
  3a:	49 89 45 00          	mov    %rax,0x0(%r13)
  3e:	8b                   	.byte 0x8b
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	0f 85 a3 00 00 00    	jne    0xa9
   6:	49 8b 47 58          	mov    0x58(%r15),%rax
   a:	49 39 45 00          	cmp    %rax,0x0(%r13)
   e:	73 04                	jae    0x14
  10:	49 89 45 00          	mov    %rax,0x0(%r13)
  14:	8b                   	.byte 0x8b
  15:	05                   	.byte 0x5
[    0.414747][    C0] RSP: 0000:ffffffffb5203d70 EFLAGS: 00000246
[    0.414749][    C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[    0.414750][    C0] RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffffffffb6214958
[    0.414752][    C0] RBP: 0000000000000246 R08: 342e30202020205b R09: 205b5d3836303331
[    0.414754][    C0] R10: 5b5d383630333134 R11: 205d305420202020 R12: ffffffffb5203ddf
[    0.414756][    C0] R13: ffffffffb5203de0 R14: 0000000000000000 R15: ffffffffb56e53a0
[ 0.414761][ C0] console_unlock (kernel/printk/printk.c:3043) 
[ 0.414764][ C0] vprintk_emit (kernel/printk/printk.c:3900 (discriminator 1) kernel/printk/printk.c:3935 (discriminator 1) kernel/printk/printk.c:2349 (discriminator 1)) 
[ 0.414767][ C0] _printk (kernel/printk/printk.c:2371) 
[ 0.414773][ C0] __clocksource_register_scale (kernel/time/clocksource.c:1226) 
[ 0.414778][ C0] tsc_init (arch/x86/kernel/tsc.c:1079 arch/x86/kernel/tsc.c:1620) 
[ 0.414783][ C0] x86_late_time_init (arch/x86/include/asm/cpufeature.h:171 arch/x86/kernel/time.c:103) 
[ 0.414787][ C0] start_kernel (init/main.c:1037) 
[ 0.414792][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:495) 
[ 0.414795][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:437 (discriminator 5)) 
[ 0.414798][ C0] common_startup_64 (arch/x86/kernel/head_64.S:421) 
[    0.414805][    C0]  </TASK>
[    0.414806][    C0] Modules linked in:
[    0.414809][    C0] CR2: 0000000000000030
[    0.414810][    C0] ---[ end trace 0000000000000000 ]---
[ 0.414812][ C0] RIP: 0010:apic_ack_edge (arch/x86/kernel/apic/vector.c:1058 (discriminator 1) arch/x86/kernel/apic/vector.c:915 (discriminator 1)) 
[ 0.414815][ C0] Code: 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 53 48 89 fb 48 85 ff 74 4b 48 89 f8 48 89 c2 48 8b 40 28 48 85 c0 75 f4 48 8b 7a 30 <f6> 47 30 01 75 11 48 8b 43 10 8b 00 f6 c4 01 75 19 5b e9 04 12 01
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	f3 0f 1e fa          	endbr64 
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	53                   	push   %rbx
   f:	48 89 fb             	mov    %rdi,%rbx
  12:	48 85 ff             	test   %rdi,%rdi
  15:	74 4b                	je     0x62
  17:	48 89 f8             	mov    %rdi,%rax
  1a:	48 89 c2             	mov    %rax,%rdx
  1d:	48 8b 40 28          	mov    0x28(%rax),%rax
  21:	48 85 c0             	test   %rax,%rax
  24:	75 f4                	jne    0x1a
  26:	48 8b 7a 30          	mov    0x30(%rdx),%rdi
  2a:*	f6 47 30 01          	testb  $0x1,0x30(%rdi)		<-- trapping instruction
  2e:	75 11                	jne    0x41


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240516/202405162230.b806f460-oliver.sang@intel.com


-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki